build: bump @junobuild/config from 2.4.3 to 2.5.0 in /demo

Bumps [@junobuild/config](https://github.com/junobuild/juno-js/tree/HEAD/packages/config) from 2.4.3 to 2.5.0.
- [Release notes](https://github.com/junobuild/juno-js/releases)
- [Commits](https://github.com/junobuild/juno-js/commits/HEAD/packages/config)

---
updated-dependencies:
- dependency-name: "@junobuild/config"
  dependency-version: 2.5.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]